Piston assembly assembly tool

Abstract

A piston assembly assembling tool, comprising a horizontally arranged positioning plate, a positioning column arranged at the center of the lower end surface of the positioning plate, a positioning hole arranged in the vertical direction of the positioning column, the upper end of the positioning hole penetrating the positioning plate, a plurality of through holes arranged on the circumference of the positioning plate, a movable rod connected to the through holes, a pressing ring connected to the upper ends of the movable rods, a push block connected to the lower ends of the movable rods, a limiting mechanism arranged on the outer edge of the lower end surface of the positioning plate, and the limiting mechanism having the piston and the spring seat on the same axis. The piston assembly assembling tool can fix the position of the spring seat when the piston is installed with the spring seat and the spring, and can make the spring seat coaxial with the piston and the spring seat hole of the cylinder body, thereby reducing the risk of the sealing ring of the spring seat being cut off by the spring seat hole of the cylinder body, and quickly positioning the piston and the spring seat, and facilitating disassembly and assembly, and being capable of being pressed by machine or hand.

Description

Technical Field

[0001] This invention relates to the field of piston installation equipment technology, and in particular to a piston assembly tooling. Background Technology

[0002] The piston assembly is a common component in braking systems. To ensure cylinder sealing, a sealing ring D is installed on the spring seat B of the piston assembly. When the braking system is working, hydraulic fluid is supplied, compressing the spring A inside the piston, causing the piston C to press against the brake disc, thus achieving the braking effect. When the brake is released, spring A returns to its original position, and piston C also returns to its original position, achieving the purpose of releasing the brake. However, when installing spring seat B and spring A in piston C, there is a gap between spring seat B and piston C, see... Figure 1 Therefore, when installing spring seat B inside piston C before installing spring A, the center position of spring seat B is not fixed, nor is it necessarily coaxial with the piston C or the spring seat B hole in the cylinder. If there is a misalignment, the sealing ring D installed on spring seat B may be cut off by the spring seat hole in the cylinder when installing the piston assembly in the cylinder. Summary of the Invention

[0003] The purpose of this invention is to provide a piston assembly tooling that, when installing the spring seat and spring, fixes the position of the spring seat, making the spring seat coaxial with the piston and also coaxial with the spring seat hole of the cylinder, thereby reducing the risk of the sealing ring on the spring seat being cut off by the spring seat hole of the cylinder.

[0004] To achieve the above objectives, the following technical solution is adopted: a piston assembly tooling, including a horizontally arranged positioning plate, a positioning post at the center of the lower end face of the positioning plate, a positioning hole in the vertical direction of the positioning post, the upper end of the positioning hole penetrating the positioning plate, multiple through holes arranged around the circumference of the positioning plate, a movable rod connected to the through holes, a pressure ring connected to the upper end of the multiple movable rods, a push block connected to the lower end of the movable rod, and a limit mechanism provided on the outer edge of the lower end face of the positioning plate, the limit mechanism having the function of keeping the piston and the spring seat on the same axis.

[0005] Preferably, the limiting mechanism includes at least three limiting rods, which are arranged vertically and whose upper ends are connected to the outer edge of the positioning plate. The inner circles of the multiple limiting rods are coaxial with the positioning holes.

[0006] Preferably, the limiting mechanism is a limiting cylinder, the upper end of which is connected to the lower end face of the positioning plate. The limiting cylinder is coaxially arranged with the positioning hole, and the positioning plate and the limiting cylinder are both provided with an operating port.

[0007] Preferably, the inner cross-section of the limiting rod is an arc-shaped structure.

[0008] Preferably, the limiting cylinder has a stepped hole structure inside, and the lower hole diameter is smaller than the upper hole diameter.

[0009] The beneficial effects achieved by this invention are as follows:

[0010] This invention provides a piston assembly fixture that positions the spring seat by setting a positioning hole and positions the piston by setting a limiting mechanism. The limiting mechanism is coaxial with the positioning hole, so that when the piston is installed with the spring seat and the spring, the position of the spring seat can be fixed, making the spring seat coaxial with the piston and also coaxial with the spring seat hole of the cylinder. This reduces the risk of the sealing ring on the spring seat being cut off by the spring seat hole of the cylinder. It can also quickly position the piston and the spring seat, and is easy to disassemble and assemble, and can be done by machine or by hand. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the piston assembly structure.

[0012] Figure 2 This is a schematic diagram of a piston assembly tooling structure according to the present invention.

[0013] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the present invention.

[0014] Figure 4 This is a schematic diagram of the process of using the present invention. Detailed Implementation

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0016] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0017] See appendix Figure 1-4 A piston assembly fixture includes a horizontally positioned positioning plate 1. A positioning post 2 is positioned at the center of the lower end face of the positioning plate 1. The positioning post 2 has a positioning hole 3 in the vertical direction. The upper end of the positioning hole 3 passes through the positioning plate 1. Multiple through holes 4 are arranged around the upper circumference of the positioning plate 1. A movable rod 5 is connected to the through hole 4. The upper ends of the multiple movable rods 5 are connected to a pressure ring 6. A push block 7 is connected to the lower end of the movable rod 5. A limit mechanism is provided on the outer edge of the lower end face of the positioning plate 1. The limit mechanism is designed to keep the piston and the spring seat on the same axis.

[0018] The limiting mechanism includes at least three limiting rods (not shown in the figure). The limiting rods are arranged vertically and their upper ends are connected to the outer edge of the positioning plate 1. The inner circles of the multiple limiting rods are coaxial with the positioning holes 3.

[0019] The limiting mechanism is a limiting cylinder 8, the upper end of which is connected to the lower end face of the positioning plate 1. The limiting cylinder 8 is coaxially arranged with the positioning hole 3, and the positioning plate 1 and the limiting cylinder 8 are both provided with an operating port 9.

[0020] The inner cross-section of the limiting rod is an arc-shaped structure.

[0021] The limiting cylinder 8 has a stepped hole structure inside, and the lower hole diameter is smaller than the upper hole diameter.

[0022] The working principle of the piston assembly fixture is as follows: First, assemble the spring seat B inside the piston C, then place the spring A onto the spring seat B. Next, insert the retaining ring F and the elastic retaining ring E. Pass the spring seat B through the positioning hole 3 on the positioning pin 2. Simultaneously, the piston C is limited by the limiting mechanism, i.e., the inner wall of the limiting mechanism mates with the outer wall of the piston C. The limiting mechanism is coaxial with the positioning hole 3. Use a press to press the fixture's pressure ring 6. When the piston rod 5 presses the retaining ring F until the piston C exposes the elastic retaining ring groove, use retaining ring pliers to install the elastic retaining ring E into place. Then, push the piston C out of the fixture. The spring seat B of this piston assembly has been positioned, ensuring that the spring seat B is coaxial with the piston C and also with the spring seat hole of the cylinder body. This reduces the risk of the sealing ring D on the spring seat B being cut off by the spring seat hole of the cylinder body; it also allows for quick positioning of the piston and spring seat, and is easy to assemble and disassemble, suitable for both machine and manual pressing.

[0023] The pressure ring and the movable rod are made of steel, while the positioning plate and the limiting mechanism can be made of aluminum scrap.

[0024] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A piston assembly assembly tool comprising a horizontally arranged positioning plate (1), characterized in that: The lower end surface of the positioning plate (1) is provided with a positioning column (2) in the center, the positioning column (2) is provided with a positioning hole (3) in the vertical direction, the upper end of the positioning hole (3) penetrates the positioning plate (1), a plurality of through holes (4) are arranged on the positioning plate (1), the through holes (4) are connected with movable rods (5), the upper ends of the movable rods (5) are connected with a pressing ring (6), the lower ends of the movable rods (5) are connected with push blocks (7), a limiting mechanism is arranged on the outer edge of the lower end surface of the positioning plate (1), the limiting mechanism has the same axis as the piston and the spring seat; The limiting mechanism is a limiting cylinder (8), the upper end of the limiting cylinder (8) is connected with the lower end surface of the positioning plate (1), the limiting cylinder (8) is coaxially arranged with the positioning hole (3), the positioning plate (1) and the limiting cylinder (8) are jointly provided with an operation port (9), the inside of the limiting cylinder (8) is a stepped hole structure, and the lower end aperture is smaller than the upper end aperture; The limiting mechanism includes at least three limiting rods, the limiting rods are arranged in the vertical direction and the upper ends of the limiting rods are connected with the outer edge of the positioning plate (1), the inscribed circle of the plurality of limiting rods is coaxial with the positioning hole (3); The inner side cross section of the limiting rod is an arc structure.

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